Made a small step forward. After some security updates ubuntu asked to restart. After restart the obdgui started to show the GPS info again! However after logging for maybe 5 or 10 minutes the gps.longps.latgps.alt
got stuck at the same values, no longer changing, even though I was driving and tangoGPS showed the correct location on the map all the way, so GPS was working, just not passing the info to obdgpslogger correctly. Any suggestions?

Tried a couple of more times. obdgpslogger still only records the first few minutes of GPS coordinates and then the values got stuck at the same place. I also tried without running tangoGPS and the result is the same. Still waiting for some suggestions....